However, there is no indication that he was using voice-modulated continuous high frequency waves, as used for radio today.
His program notes says, "Very low frequency electronic waves make sounds undulate."
The high frequency waves are sent out and pull the contaminants off of the object.
Using very high frequency longitudinal or sound waves, applied at the appropriate fundamental frequency.
This is physically ridiculous, since it means that all energy leaks into high frequency electromagnetic waves over time.
Constructive waves are often low frequency waves of swell type.
By altering, the signal is changed to high frequency wave.
Generating extremely low frequency waves in the 0.1 Hz range.
The shorter wavelengths have higher energy, that is higher frequency waves.
That is, they do not follow the curvature of the earth, as do medium frequency waves.